TextEditor.js

import tempfile
import os
import re
from subprocess import Popen, PIPE, STDOUT
from IPython.core.display import SVG

def unl2dot(text, path):
    with tempfile.NamedTemporaryFile() as temp:
        out_name = os.path.basename(temp.name)
        out_dir = os.path.dirname(temp.name)

    with tempfile.NamedTemporaryFile(mode="w") as in_file:
        # Remove CRLF and flush output to avoid java errors
        in_file.write(text.replace("\r\n", "\n"))
        in_file.flush()

        # Run java parser
        cmd = ['java', '-jar', path,
               '--input-file', in_file.name,
               '--output-Dir', out_dir, '--output-file', out_name,
               '--output-type', 'dot']

        with Popen(cmd, stdout=PIPE, stderr=STDOUT) as p:
            p.wait()
            p.stdout.flush()
            if p.returncode != 0:
                print("Error in unl2rdf: \n\n"+p.stdout.read().decode())
                print('UNL;')
                print(text)

    # generate dot output
    fname = '{}/{}.dot'.format(out_dir, out_name)
    cmd = ['dot', '-Tsvg', fname]
    with Popen(cmd, stdout=PIPE, stderr=PIPE) as p:
        p.wait()
        if p.returncode != 0:
            print("Error creating svg: \n\n"+p.stderr.read().decode())
            print('UNL:')
            print(text)
            try:
                with open(fname) as f:
                    print('DOT:')
                    print(f.read())
            except FileNotFoundError:
                pass
        else:
            svg = p.stdout.read().decode()
            os.remove(fname)
            return svg
    return ""


def displayUnl(unldata) :
# We generate protoSVG because whent there are several sentences, 
# a string composed of several concatenated SVG is produced (not a valid SVG).
# We must then split the string to obtain several valid SVG to display.
    protoSvg = unl2dot(unldata, "unl2rdf-app-1.0-SNAPSHOT-jar-with-dependencies.jar")
    sep = "</svg>\n"
    svgArray = [x+sep for x in protoSvg.split(sep)]
    svgArray.pop()
    for svg in svgArray :
        text = re.search('\{org.*\n(.*)\n.*org\}',unldata).group(1)
        print(text)
        display(SVG(svg))